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PrecisionTemp Shower-Mate Marine Water Heater
  • Never run out of hot water again
  • Designed specifically for the marine environment
  • Needs no engine or shore power
  • Mounts almost anywhere with standard power vent
  • No pilot light and very high efficiency
  • Straight forward installation.  Closed combustion option
  • Reliable, proven VariFlame technology control system

The PrecisionTemp Shower Mate propane marine water heater with patented VariFlame controls, delivers an endless flow of hot water for the ultimate sailor shower.  

It's perfect for the boater who doesn't want to leave the comforts of home behind when the hot water outlet is turned on  the VariFlame control system keeps the water temperature constant regardless the flow rate or incoming water temperature variations.  

With 55,000 BTUs of heating capacity, the Shower-Mate has 5-6 times the power of the typical tank heater.  And all without engine power or shower power.  

It's lightweight, compact, efficient and installs almost anywhere.  In fact, the typical boat owner can expect to use very little propane for all of this comfort.  

The Shower-Mate propane fired tankless water heater is stainless steel construction and can be mounted as a closed combustion system for safety and peach of mind.



 Gas instantaneous, power vented.  Full gas modulation temperature control.



11.5" Wide x 13.5" Deep x 14.25" High.  Weight:  27.5 lbs full



Electric: 18-2 x 2' lead.

Gas:  Brass 3/8" flare inside case, rear accessible.  

Water:  1/2" OD copper tubing.  Brass compression to 1/2" NPT elbow can be installed or as specified.  



55,000 Btu input - 44,000 Btu output at maximum burn at 8.5 WCI manifold pressure.

15,000 Btu input - 10,600 Btu output at low burn at 1.2 WCI manifold pressure.

(88F temperature rise per gallon per minute continuous flow at high burn).


Fuel Consumption:

2.55 lbs per hour at maximum input.  ( At 2 GPM of water, 20 lbs of propane will produce over 940 gallons of hot water).



Side mounted keyed bracket.  Left or right side mounted



Zero clearance top (blower), bottom and sides.  2" in back for hook-ups.  Enough space in front to remove cover for service



3 power vent with proofing switch.  (3 stainless flex duct recommended to the outside and can run up to 25')



Modular: Three assemblies; gas, electronics and water.

Burner:  High primary air, 12 element, atmospheric type.  Aluminized steel body with stainless flame strips.

Heat exchanger: Copper fin tube type with wrap for cooling.

Electronics: Plug in, potted, works-in-a-drawer.

Case and flue assembly are stainless steel.



Propane at 11 WCI



12 VDC at 4 amps while running, 40 milli-amps in standby.  # 12 power line recommended.


Water Temperature:

Factory set at 115 F.  Can be field adjusted 90 to 135F.



Mounting flanges included.  Must be mounted in accordance with any  applicable Coast Guard and ABYC recommendations.


Safety Features:

The Shower-Mate is pilotless.  There is no flame unless water flow is sensed.

Flame rectification: Gas valve shuts off in .8 of a second if there is a flame outage.

Redundant gas solenoid.

Electronic high temperature shut-off (two).

ECO high temperature shut off @ 165F with manual reset.

Pressure relief valve at 100 PSI.

Power vent must proof fluing before gas valve opens.

Due to continuous product improvement PrecisionTemp reserves the right to change specifications at any time.

Order Mushroom Vent $79.00
Order ShowerMate Boat Heater $1450.00
Call to Order Venting


Electric Water Heaters, Tankless Electric Water Heaters

Electric Water Heaters, Tankless Electric Water Heaters

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